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Equal masses of methane and oxygen are mixed in an empty container at 25^ C . The fraction of the total pressure exerted by oxygen is

Options

  1. A2 3
  2. B1 3 273 298
  3. C1 3
  4. D1 2

Correct answer

C. 1 3

Step-by-step solution

Let the mass of methane and oxygen is w aligned & mole fraction of oxygen = w 32 w 32 + w 16 & = 1 32 1 32 + 1 16 = 1 32 3 32 = 1 3 aligned Let the total pressure be P The pressure exerted by oxygen (partial pressure) = X _ O ₂ P _ total P 1 3 Hence, (C) is correct.

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